// Licensed to the Apache Software Foundation (ASF) under one
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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//
// Automatically generated by addcopyright.py at 01/29/2013
package com.cloud.baremetal.networkservice;

import com.cloud.baremetal.database.BaremetalPxeVO;
import com.cloud.baremetal.manager.BaremetalVlanManager;
import com.cloud.dc.DataCenter;
import com.cloud.dc.DataCenterVO;
import com.cloud.dc.Pod;
import com.cloud.dc.dao.DataCenterDao;
import com.cloud.deploy.DeployDestination;
import com.cloud.exception.ConcurrentOperationException;
import com.cloud.exception.InsufficientCapacityException;
import com.cloud.exception.ResourceUnavailableException;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.network.Network;
import com.cloud.network.Network.Capability;
import com.cloud.network.Network.GuestType;
import com.cloud.network.Network.Provider;
import com.cloud.network.Network.Service;
import com.cloud.network.Networks.TrafficType;
import com.cloud.network.PhysicalNetworkServiceProvider;
import com.cloud.network.element.NetworkElement;
import com.cloud.offering.NetworkOffering;
import com.cloud.utils.component.AdapterBase;
import com.cloud.utils.db.DB;
import com.cloud.utils.db.QueryBuilder;
import com.cloud.utils.db.SearchCriteria.Op;
import com.cloud.utils.exception.CloudRuntimeException;
import com.cloud.vm.NicProfile;
import com.cloud.vm.NicVO;
import com.cloud.vm.ReservationContext;
import com.cloud.vm.VMInstanceVO;
import com.cloud.vm.VirtualMachine.Type;
import com.cloud.vm.VirtualMachineProfile;
import com.cloud.vm.dao.NicDao;
import com.cloud.vm.dao.VMInstanceDao;
import org.apache.log4j.Logger;

import javax.ejb.Local;
import javax.inject.Inject;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

@Local(value = NetworkElement.class)
public class BaremetalPxeElement extends AdapterBase implements NetworkElement {
    private static final Logger s_logger = Logger.getLogger(BaremetalPxeElement.class);
    private static final Map<Service, Map<Capability, String>> capabilities;

    @Inject
    BaremetalPxeManager _pxeMgr;;
    @Inject
    VMInstanceDao _vmDao;
    @Inject
    NicDao _nicDao;
    @Inject
    BaremetalVlanManager vlanMgr;
    @Inject
    DataCenterDao zoneDao;

    static {
        Capability cap = new Capability(BaremetalPxeManager.BAREMETAL_PXE_CAPABILITY);
        Map<Capability, String> baremetalCaps = new HashMap<Capability, String>();
        baremetalCaps.put(cap, null);
        capabilities = new HashMap<Service, Map<Capability, String>>();
        capabilities.put(BaremetalPxeManager.BAREMETAL_PXE_SERVICE, baremetalCaps);
    }

    @Override
    public Map<Service, Map<Capability, String>> getCapabilities() {
        return capabilities;
    }

    @Override
    public Provider getProvider() {
        return BaremetalPxeManager.BAREMETAL_PXE_SERVICE_PROVIDER;
    }

    private boolean canHandle(DeployDestination dest, TrafficType trafficType, GuestType networkType) {
        Pod pod = dest.getPod();
        if (pod != null && trafficType == TrafficType.Guest) {
            QueryBuilder<BaremetalPxeVO> sc = QueryBuilder.create(BaremetalPxeVO.class);
            sc.and(sc.entity().getPodId(), Op.EQ, pod.getId());
            return sc.find() != null;
        }

        return false;
    }

    @Override
    public boolean implement(Network network, NetworkOffering offering, DeployDestination dest, ReservationContext context) throws ConcurrentOperationException,
        ResourceUnavailableException, InsufficientCapacityException {
        if (dest.getDataCenter().getNetworkType() == DataCenter.NetworkType.Advanced){
            return true;
        }

        if (offering.isSystemOnly() || !canHandle(dest, offering.getTrafficType(), network.getGuestType())) {
            s_logger.debug("BaremetalPxeElement can not handle network offering: " + offering.getName());
            return false;
        }
        return true;
    }

    @Override
    @DB
    public boolean prepare(Network network, NicProfile nic, VirtualMachineProfile vm, DeployDestination dest, ReservationContext context)
        throws ConcurrentOperationException, ResourceUnavailableException, InsufficientCapacityException {
        if (vm.getType() != Type.User || vm.getHypervisorType() != HypervisorType.BareMetal) {
            return false;
        }

        VMInstanceVO vo = _vmDao.findById(vm.getId());
        if (vo.getLastHostId() == null) {
            nic.setMacAddress(dest.getHost().getPrivateMacAddress());
            NicVO nicVo = _nicDao.findById(nic.getId());
            assert vo != null : "Where ths nic " + nic.getId() + " going???";
            nicVo.setMacAddress(nic.getMacAddress());
            _nicDao.update(nicVo.getId(), nicVo);

            /*This vm is just being created */
            if (!_pxeMgr.prepare(vm, nic, network, dest, context)) {
                throw new CloudRuntimeException("Cannot prepare pxe server");
            }
        }

        if (dest.getDataCenter().getNetworkType() == DataCenter.NetworkType.Advanced){
            prepareVlan(network, dest);
        }

        return true;
    }

    private void prepareVlan(Network network, DeployDestination dest) {
        vlanMgr.prepareVlan(network, dest);
    }

    @Override
    public boolean release(Network network, NicProfile nic, VirtualMachineProfile vm, ReservationContext context) throws ConcurrentOperationException,
        ResourceUnavailableException {
        if (vm.getType() != Type.User || vm.getHypervisorType() != HypervisorType.BareMetal) {
            return false;
        }

        DataCenterVO dc = zoneDao.findById(vm.getVirtualMachine().getDataCenterId());
        if (dc.getNetworkType() == DataCenter.NetworkType.Advanced) {
            releaseVlan(network, vm);
        }
        return true;
    }

    private void releaseVlan(Network network, VirtualMachineProfile vm) {
        vlanMgr.releaseVlan(network, vm);
    }

    @Override
    public boolean shutdown(Network network, ReservationContext context, boolean cleanup) throws ConcurrentOperationException, ResourceUnavailableException {
        return true;
    }

    @Override
    public boolean isReady(PhysicalNetworkServiceProvider provider) {
        return true;
    }

    @Override
    public boolean shutdownProviderInstances(PhysicalNetworkServiceProvider provider, ReservationContext context) throws ConcurrentOperationException,
        ResourceUnavailableException {
        return true;
    }

    @Override
    public boolean canEnableIndividualServices() {
        return false;
    }

    @Override
    public boolean destroy(Network network, ReservationContext context) throws ConcurrentOperationException, ResourceUnavailableException {
        return true;
    }

    @Override
    public boolean verifyServicesCombination(Set<Service> services) {
        return true;
    }
}
